A kind of alcohol-based fuel composite addition agent for engine and preparation method thereof
Technical field
The present invention relates to a kind of engine preparation method of clean alcohol-based fuel core functionality auxiliary agent.
Background technology
Engine with clean alternative fuel in, methanol gasoline has unrivaled advantage, and the development and application of methanol gasoline can Optimization of Energy Structure, alleviates contradiction between oil supply and demand, is that automobile substitutes the long term growth direction with fuel.
CN 101215484A discloses a kind of preparation method of methanol gasoline additive, it is comprised of the component of following weight fraction: 25 ~ 30 parts of methyl alcohol, 5 ~ 10 parts of isopropylcarbinols, 10 ~ 15 parts of oleic acid, 1 ~ 3 part of methylcarbonate, 1 ~ 3 part of dme, tween 80 are 0.1 ~ 0.2 part, and sorbester p17 is 0.1 ~ 0.3 part, 1 ~ 2 part, acetone, 0.1 ~ 0.3 part of the trimethyl carbinol, 0.1 ~ 0.3 part of vulkacit H, 0.1 ~ 0.2 part of 102TB corrosion inhibitor.CN 1923981A discloses a kind of method of methanol gasoline additive preparation, and with ethane, normal hexane, methyl tertiary butyl ether, ethanol, n-propyl alcohol, glycol, neopentyl glycol, 1, the mixing preparations such as 3-dihydroxyl butane form according to part by weight.The shortcoming of above modified methanol additive is the methanol gasoline unstable properties, the easy emulsification of water breakthrough, layering, and low-temperature cool starting difficulty, the high temperature vapour lock, and also metal is had corrosion to methyl alcohol and to the swelling of rubber, production cost is more high.
Summary of the invention
The object of the invention is to overcome the shortcoming of existing modified methanol additive, a kind of alcohol-based fuel composite addition agent for engine and preparation method thereof is provided.Lower with the cost of realizing composite assistant, it is not stratified that the product of allotment is met water, and emulsification does not occur, and also can start when cold at hot weather and winter; And the preparation method is simple, environmental pollution is few.
Alcohol-based fuel composite addition agent for engine of the present invention, that component by following volume percent is at 40 ℃, the synthetic product of 20 min refluxes under 50 r/min ~ 70 r/min agitation conditions: solubility promoter 60 ~ 70, dynamic modification agent 10 ~ 20, solubilizing agent 5 ~ 10, oxidation and corrosion inhibitor 1 ~ 5, anti-swelling agent 1 ~ 3, limpid dose 1 ~ 2.
The preparation method of alcohol-based fuel composite addition agent of the present invention comprises the following steps:
(1) solubility promoter preparation: the alcohol of following volume ratio is placed in reactor in batches: propyl carbinol 3 ~ 14%, the trimethyl carbinol 6 ~ 27%, Virahol 15 ~ 35%, Pentyl alcohol 3 ~ 14%, primary isoamyl alcohol 3 ~ 14%, n-Octanol 3 ~ 14%, under 50 ℃~70 ℃, 100 r/min ~ 120 r/min agitation conditions, airtight backflow 30 min, the standing clear that is cooled to saves backup;
(2) solubilizing agent preparation: be hexalin by volume with hexalin and ethylene glycol monobutyl ether: ethylene glycol monobutyl ether=40 ~ 60: 40 ~ 60; Add in backflow glass stirring tank, at 40 ℃, under 50 r/min ~ 60 r/min agitation conditions, return stirring times 20 min is cooled to room temperature, adds the HMPA of above cumulative volume 15 ~ 35% amounts, continue to be warmed up to 50 ℃, stirring reaction 20 min ~ 30 min, cooling, airtight saving backup;
(3) dynamic modification agent preparation: according to volume ratio be with following functional aid, kerosene 20 ~ 40%, dimethylbenzene 20 ~ 40%, methylcarbonate 10 ~ 30%, N, accelerine 10 ~ 30%, be placed in the airtight glass reaction still that refluxes, at 40 ℃, under 50 r/min ~ 70 r/min agitation conditions, reaction 30 min ~ 60 min, the standing room temperature that is cooled to, airtight standby;
(4) oxidation and corrosion inhibitor preparation: following component and mass ratio are added in the airtight glass reaction still that refluxes; T202 56 ~ 77%, N, N ,-di-sec-butyl-p-phenyl enediamine 23 ~ 44%, under 50 r/min ~ 70 r/min agitation conditions, slowly are warming up to 35 ℃ ~ 40 ℃, and reaction 20 min ~ 30 min are to transparent dark red liquid, standing cooling, airtight standby;
(5) anti-swelling agent preparation: following component and mass ratio are dropped in the glass reaction still in batches: solubility promoter 65 ~ 80%, calcium mahogany sulfonate 15 ~ 35%, heat up and at the uniform velocity stir, stirring velocity 50 r/min ~ 70 r/min, temperature is controlled at 40 ℃, until becoming as clear as crystal liquid, material gets final product, cooling, standing airtight standby;
(6) limpid dose of preparation: following component and volume ratio are added in reactor; Viscotrol C methyl esters 20 ~ 45%, wilson dogwood oil methyl esters 20 ~ 45%, tung oil methyl ester 20 ~ 45%; At 90 ℃ ~ 120 ℃ reaction 30min ~ 40min, get final product until become as clear as crystal liquid, cooling, standing airtight standby;
(7) finished product auxiliary agent preparation: above each composition is added in the glass reaction still in batches solubility promoter 60 % ~ 70%, dynamic modification agent 10% ~ 20%, solubilizing agent 5% ~ 10%, oxidation and corrosion inhibitor 1% ~ 5%, limpid dose 1% ~ 2% according to following volume ratio; At 40 ℃, 50 r/min ~ 70 r/min, stirring and refluxing 20 min are finished product until become little prescribed liquid that is popular in.
The present invention compares with additive method and has more specific aim and the interim property adjusted; It is not stratified that the product of the present invention preparation is met water, and phase stability is good, emulsification does not occur, and has very wide buffer index, can keep the material clear after introducing limpid dose; Oil quality is near commercially available 93# and 97# unleaded gasoline for vehicle, all can start when cold at hot weather and winter; The cost of composite assistant is lower, has a good application prospect; And the preparation method is simple, environmental pollution is few.
Embodiment
Embodiment 1:
For the characteristic and the practical application that embody alcohol-based fuel composite addition agent for engine, we are applied in methanol base gasoline, and its every physico-chemical property is characterized.Concrete composite assistant collocation method and detection data are as follows:
(1) solubility promoter preparation: with compound alcohol according to volume ratio, propyl carbinol 8.3%, the trimethyl carbinol 16.7%, Virahol 25%, Pentyl alcohol 16.7%, primary isoamyl alcohol 16.7%, n-Octanol 16.7% are placed in reactor in batches, under 50 ℃ of temperature, normal pressure, stirring velocity 100 r/min conditions, airtight backflow continuously stirring reaction 30 min, standing cooling until clear, airtight saving backup;
(2) solubilizing agent preparation: under the low rate mixing state, volume ratio hexalin 50%, ethylene glycol monobutyl ether 50% are warming up to 40 ℃ in backflow glass stirring tank, stirring velocity is controlled at 50 r/min, churning time 20 min are cooled to room temperature, slowly add the HMPA of above cumulative volume 25% amount under whipped state, continue to be warmed up to 50 ℃, stirring reaction 20 min, cooling, airtight saving backup;
(3) dynamic modification agent preparation: under the low rate mixing state, with following functional aid proportionally kerosene 30%, dimethylbenzene 30%, methylcarbonate 20%, N, accelerine 20% is placed in the airtight glass reaction still that refluxes, be warming up to 40 ℃, continuously stirring reaction 30 min, stirring velocity is controlled at 50 r/min, and the standing room temperature that is cooled to is airtight standby;
(4) oxidation and corrosion inhibitor preparation: in the airtight glass reaction still that refluxes according to mass ratio T202 66.7%, N, N,-di-sec-butyl-p-phenyl enediamine 33.3%, stirring velocity 50 r/minn, slowly be warming up to 35 ℃, the time is controlled at 20 min, to transparent dark red liquid, standing cooling, airtight standby;
(5) anti-swelling agent preparation: under the low rate mixing state, accurately take solubility promoter 75%, calcium mahogany sulfonate 25% according to mass ratio, drop in the glass reaction still in batches, heat up and at the uniform velocity stir, stirring velocity 50 r/min, temperature is controlled at 40 ℃, gets final product until material becomes as clear as crystal liquid, cooling, standing airtight standby;
(6) limpid dose of preparation: according to mass ratio, Viscotrol C methyl esters 33.3%, the wilson dogwood oil methyl esters 33.3%, tung oil methyl ester 33.3% etc. that will meet the GB/T20828-2007 standard under the low rate mixing state inject reactor successively, react 30min under 120 ℃ of conditions, until becoming as clear as crystal liquid, material gets final product, cooling, standing airtight standby;
(7) finished product auxiliary agent preparation: above each composition is added in the glass reaction still in batches solubility promoter 72.7 %, dynamic modification agent 11.7 %, solubilizing agent 8.3 %, oxidation and corrosion inhibitor 3.3 %, anti-swelling agent 2%, limpid dose 2% according to following volume ratio; Be heated to 40 ℃ of airtight backflows, low whipping speed is that 50 r/min ~ 70 r/min stir 20 min, gets final product until become little prescribed liquid that is popular in, and is cooling airtight standby.
With above-mentioned solubility promoter 64%, dynamic modification agent 20%, solubilizing agent 6%, oxidation and corrosion inhibitor 5%, anti-swelling agent 3%, No. 1, alcohol-based fuel composite addition agent of the ratio hybrid-engine of limpid dose 2%.
Embodiment 2:
With above-mentioned solubility promoter 70%, dynamic modification agent 15%, solubilizing agent 9%, oxidation and corrosion inhibitor 3%, anti-swelling agent 2%, No. 2, alcohol-based fuel composite addition agent of the ratio hybrid-engine of limpid dose 1%.
Embodiment 3(M15-1#)
Under normal temperature and pressure, add the alcohol-based fuel composite addition agent of No. 1 of 1.5L in 50L methyl alcohol, 70 r/min stir 20min, airtight preservation at rotating speed.Under rotating speed 80 r/min agitation conditions with denatured methyl alcohol impouring stirring tank in, then 283L is not added in the 90# white gasoline of oxygenatedchemicals the speed with 50L/min and injects stirring tank, stir 10min.Complete, airtight preservation.After testing, data are as shown in table 1:
Embodiment 4(M15-2#)
Under normal temperature and pressure, add the alcohol-based fuel composite addition agent of No. 2 of 3L in 50L methyl alcohol, 70 r/min stir 20min, airtight preservation at rotating speed.Under rotating speed 80 r/min agitation conditions with denatured methyl alcohol impouring stirring tank in, then 283L is not added in the 90# white gasoline of oxygenatedchemicals the speed with 50L/min and injects stirring tank, stir 10min.Complete, airtight preservation.After testing, data are as shown in table 1:
Embodiment 5(M30-1#)
Under normal temperature and pressure, add the composite assistant of 4L with the composite assistant allotment of methyl alcohol with its volume 4% in 100L methyl alcohol, mixing speed 70 r/min, churning time 20min modulate complete airtight preservation.Under tool mechanical stirring and rotating speed 80 r/min conditions with denatured methyl alcohol impouring stirring tank in, then inject stirring tank, churning time 10min with not adding in the 90# white gasoline of oxygenatedchemicals the speed with 50L/min.Complete, airtight preservation.Superintend and direct institute through the Hunan commercial quality and detect, data are as shown in table 2:
Embodiment 6(M30-2#)
Under normal temperature and pressure, add the composite assistant of No. 1, No. 2 of 8L with the composite assistant allotment of methyl alcohol with its volume 4% in 100L methyl alcohol, mixing speed 70 r/min, churning time 20min modulate complete airtight preservation.Under tool mechanical stirring and rotating speed 80 r/min conditions with denatured methyl alcohol impouring stirring tank in, then inject stirring tank, churning time 10min, airtight preservation with not adding in the 90# white gasoline of oxygenatedchemicals the speed with 50L/min.Data are as shown in table 2 after testing: